<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #i1{background-color: pink}
        .i2{color: green}
        ul li{background-color: blue}
        body>input,a{

        }
    </style>
</head>
<body>
<div id="i1">刘备</div>
<div>八戒</div>
<div class="i2">张飞</div>
<p>悟空</p>
<p>八戒</p>
<p id="i2">沙僧</p>
<ul>
    <li>水煮鱼</li>
    <li>红烧肉</li>
    <li id="i2">黄焖鸡</li>
</ul>
<input type="text"><input type="password">
<a href="http://www.tedu.cn">达内官网</a>
<div>
    <p>p1</p>
    <div>
        <p>p2</p>
    </div>
    <div>
        <p3>p3</p3>
        <div>
            <p>p4</p>
        </div>
    </div>
</div>
</body>
</html>